Olivetti d-Copia 12 Service Manual page 49

4) Measure the length of the copied scale image.
6) Check that the copy magnification ratio is within the
specified range. If it is not within the specified range,
perform the following procedures.
7) Execute SIM 48-1 to select the main scanning direction
copy magnification ratio adjustment mode. To select the
adjustment mode, use the copy mode select key.
In the case of the automatic adjustment, when the PRINT
switch is pressed, the mirror base unit moves to the white
plate for shading to scan the width of the reference line,
calculating the correction value and displaying and storing
this value.
After execution of the automatic adjustment, go out from
the simulation mode and make a copy to check the
magnification ratio. If the magnification ratio is not in the
specified range (100 ±1.0%), manually adjust as follows.
Adjustment mode
Main scanning direction auto
copy magnification ratio
adjustment
Main scanning direction manual
copy magnification ratio
adjustment
Sub scanning direction copy
magnification ratio adjustment
8) Set the adjustment mode to Manual with the copy mode
select key.
9) Enter the new set value of main scanning direction copy
magnification ratio with the copy quantity set key, and
press the COPY button.
10) Change the set value and repeat the adjustment until the
ratio is within the speoified range.
When the set value is changed by 1, the magnification
ratio is changed by 0.1%.
5.2.2 Sub scanning direction copy
magnification ratio
Before performing this adjustment, the following
adjustments must have been completed. If not, this
adjustment cannot be performed properly.
• Image distortion adjustment
• Must be installed to the lens unit reference position.
Y101700-5
Lighting lamp
Auto exposure lamp
ON
Manual exposure lamp
ON
Photo exposure lamp
ON
Service Manual
5) Calculate the main scanning direction magnification ratio.
Main scanning direction magnification ratio
Copy image dimensions
=
Original dimension
5.2.2.1 Cases when the adjustment is required
1) When the lens and the mirror unit are disassembled or the
part is replaced.
2) When the scanner unit drive section is disassembled or
the part is replaced.
3) When the main PWB is replaced.
4) When the EEPROM in the main PWB is replaced.
5) When "U2" trouble occurs.
6) When the copy image distortion adjustment is performed.
5.2.2.2 Necessary tools
• Screwdriver (+)
• Scale
5.2.2.3 Adjustment procedure
1) Set the scale on the document table as shown below.
(Use a long scale for precise adjustment.)
2) Set the copy magnification ratio to 100%.
3) Make a copy on A4 or 81/2" x 11" paper.
4) Measure the length of the copied scale image.
5) Calculate the sub scanning direction copy magnification
ratio.
Copy image dimensions
=
Original dimension
× 100 (%)
× 100 (%)
5-5